... I have been suffering from these same symptoms on/off for the past 4 years. I have seen so many doctors and specialists, checking my heart and insisting i had anxiety attacks which just wasn't true. After a while I thought about it rationally, I got dizzy and almost fainted (but like all of you, you never actually faint just black out but kind of jolt yourself out of it)... (9 replies)

... I continued the journey but felt pretty bad the whole time I was in Brussels. Feeling dizzy a lot, while walking to my hotel I was feeling sick and dizzy and hot. Had a panic attack in the hotel reception. ... (3 replies)